mlog_write_initial_log_record_low(): Do not allow the MLOG_TRUNCATE
record to be written.

Conflicts:
	mysql-test/suite/galera/t/galera_binlog_event_max_size_max-master.opt
	mysql-test/suite/innodb/r/innodb-mdev-7513.result
	mysql-test/suite/innodb/t/innodb-mdev-7513.test
	mysql-test/suite/wsrep/disabled.def
	storage/innobase/ibuf/ibuf0ibuf.cc

The script is intented to be sourced by other SST script so it should
not be executable (or should have a script header).
This is causing a warning on Debian Lintian tool, see:
https://salsa.debian.org/faust-guest/mariadb-10.3/-/jobs/431900

The lintian check complains on spelling error:
https://salsa.debian.org/mariadb-team/mariadb-10.3/-/jobs/95739

Don't do skip_setup_conds() unless all errors are checked.

Fixes following errors:
      ER_PERIOD_NOT_FOUND
      ER_VERS_QUERY_IN_PARTITION
      ER_VERS_ENGINE_UNSUPPORTED
      ER_VERS_NOT_VERSIONED

MDEV-21011 Table corruption reported for versioned partitioned table after DELETE: "Found a misplaced row"

LIMIT history partitions cannot be checked by existing algorithm of
check_misplaced_rows() because working history partition is
incremented each time another one is filled. The existing algorithm
gets record and tries to decide partition id for it by
get_partition_id(). For LIMIT history it will just get first
non-filled partition.

To fix such partitions it is required to do REBUILD instead of REPAIR.

When view is merged by DT_MERGE_FOR_INSERT it is then skipped from
processing and doesn't update WHERE clause with
vers_setup_conds(). Note that view itself cannot work in
vers_setup_conds() because it doesn't have row_start, row_end
fields. Thus it is required to descend down to material TABLE_LIST
through calls of mysql_derived_prepare() and run vers_setup_conds()
from there. Luckily, all views (views of views, views of views of
views, etc.) are linked in one list through next_global pointer, so we
can skip all views of views and get straight to non-view TABLE_LIST by
checking its merge_underlying_list property for zero value (it is
assigned by DT_MERGE_FOR_INSERT for merged derived tables).

We have to do that only for UPDATE and DELETE. Other DML commands
don't use WHERE clause.

MDEV-21146 Assertion `m_lock_type == 2' in handler::ha_drop_table upon LOAD DATA

LOAD DATA does not use WHERE and the above call of vers_setup_conds()
is not needed. unit->prepare() led to wrongly locked temporary table.

"write set" for replication finally got its correct place
(mark_columns_per_binlog_row_image()). When done generally in
mark_columns_needed_for_update() it affects optimization
algorithm. used_key_is_modified, query_plan.using_io_buffer are
wrongly set and that leads to wrong prepare_for_keyread() which limits
read_set.

Turn read cache off for update and multi-update for versioned
table. no_cache is reinited on each TABLE open because it is
applicable for specific algorithms.

As a side fix vers_insert_history_row() honors vers_write setting.

Aria with row_format=fixed uses IO_CACHE of type READ_CACHE for
sequential read in update loop. When history row is inserted inside
this loop the cache misses it and fails with error.

TODO:

Currently maria_extra() does not support SEQ_READ_APPEND. Probably it
might be possible to use this type of cache.

galera_2nodes.cnf did not contain wsrep_on=1 on correct places. Fixed
restart options to use correct configuration.

orig_test_id should be set properly.
Also fixed sporadic test failure.

executing undo undo_key_delete" upon startup on datadir restored from
incremental backup

aria_log* files were not copied on --prepare --incremental-dir step from
incremental to destination backup directory.

generalize the replacement

This reverts commit 0d345ec2.

Upgrades from 8.0 don't work yet, one has to dump/restore
manually to get the metadata out of the data dictionary.

mariadb packages conflict with mysql-8.0

Obsoletes: cannot contain (x86-64) anymore

Python shebang must be specific

Use my_thread_var::stack_ends_here inside lf_pinbox_real_free() for address
where thread stack ends.

Remove LF_PINS::stack_ends_here.
It is not safe to assume that mysys_var that was used during pin allocation,
remains correct during free. E.g with binlog group commit in Innodb,
that frees pins for multiple Innodb transactions, it does not work
correctly.

Prior to this fix, when matching addresses using mask,
extra bits could be used for  comparison, e.g to
match with "a.b.c.d/24" , 27 bits were compared rather than 24.

The patch fixes the calculation.

As part of commit 3c09f148
trx_undo_commit_cleanup() was always invoked with noredo=true.

The impact of this should be that some undo log pages may not be
correctly freed if the server is killed and crash recovery will be
performed. Similarly, if mariabackup --backup is being executed
concurrently with user transaction commits, it could happen that some
undo log pages in the backup will never be marked as free for reuse.

It seems that this bug should not have any user-visible
impact other than some undo pages being wasted.

The thread_id of the INSERT DELAYED thread should not be set to 0.

Add notifications about the user and connection that actually
did the DELAYED insert.

As noted in commit abd45cdc
a search with PAGE_CUR_GE may land on the supremum record on
a leaf page that is not the rightmost leaf page. This could occur
when all keys on the current page are smaller than the search key,
and the smallest key on the successor page is larger than the search key.

Hence, after a failed PAGE_CUR_GE search, assertions
btr_pcur_is_after_last_in_tree() are bogus
and should be replaced with btr_pcur_is_after_last_on_page().

fix bug for spider where using "not like" (#890)

test case:
t1 is a spider engine table;
  CREATE TABLE `t1` (
  `id` int(11) NOT NULL DEFAULT '0',
  `name` char(64) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=SPIDER

query: "select * from t1 where name  not like 'x%' " would dispatch "select xxx name name like 'x%' " to remote mysqld, is wrong

Use my_localhost instead of NULL for share->hostname.

MDEV-18957 UPDATE with LIMIT clause is wrong for versioned partitioned tables

UPDATE, DELETE: replace linear search of current/historical records
with vers_setup_conds().

Additional DML cases in view.test

Replace all io_context* occurrences with io_context_t

Even in release mode die immediately when some io_* functions return
EINVAL. This always means some programming bug and it's better to fail fast.

LinuxAIOHandler::resubmit(): fix condition. Stop ignoring -1 return code which
corresponds to EPERM and io_submit() really can return this one.

Use io_destroy() to stop leaking io_context_t.

Make m_aio_ctx std::vector instead of C array. I think that internal check
for index overflow might be useful.

Add debug assertions for EFAULT because for me receiving it
looks like a programming bug.

row_log_table_get_pk_col(): read instant field value from instant
alter table when it's required.

MDEV-20832 Don't print "row size too large" warnings in error log if innodb_strict_mode=OFF and log_warnings<=2

create_table_info_t::row_size_is_acceptable(): add condition for log writing

For ROW_FORMAT=REDUNDANT, we must reserve fixed-length dummy values
for the CHAR columns in the metadata record. This is because in
MariaDB Server 10.4, btr_cur_instant_init_low() will rely on
dict_index_t::trx_id_offset being accurate for the metadata record.

In MariaDB Server 10.4, btr_cur_instant_init_low() assumes that
all PRIMARY KEY columns that are internally variable-length will
be encoded in 0 bytes in the metadata record. Sometimes, CHAR
columns can be encoded as variable-length. We should not
unnecessarily reserve space for a dummy string value in the
metadata record.

Do not fail fi all the partitions were pruned out.

The fix consists of three commits backported from 10.3:

1) Cleanup isnan() portability checks

(cherry picked from commit 7ffd7fe9)

2) Cleanup isinf() portability checks

Original problem reported by Wlad: re-compilation of 10.3 on top of 10.2
build would cache undefined HAVE_ISINF from 10.2, whereas it is expected
to be 1 in 10.3.

std::isinf() seem to be available on all supported platforms.
(cherry picked from commit bc469a0b)

3) Use std::isfinite in C++ code

This is addition to parent revision fixing build failures.

(cherry picked from commit 54999f4e)